October 31 - November 1 - Co-Located Events
October 28-30 - Conference
Lyon Convention Centre - Lyon, France
More information for Open Source Summit + Embedded Linux Conference Europe 2019
Back To Schedule
Tuesday, October 29 • 15:15 - 15:50
The Linux Capabilities Model - Michael Kerrisk, man7.org Training and Consulting

Sign up or log in to save this to your schedule, view media, leave feedback and see who's attending!

Feedback form is now closed.
Capabilities are an attempt to mitigate the problems that result from the crude granularity of the traditional UNIX/Linux privilege model, by breaking the power of superuser into pieces which can be
individually assigned to executables.

Capabilities have been present on Linux for many years, but they remain poorly understood. And though capabilities are used by many well known pieces of software, it is probably fair to say that they are less used than the original developers may have hoped. Nevertheless, they can be used to make privileged executables that are safer than traditional set-UID-root programs.

In this talk, I'll describe the Linux capabilities model, looking at how capabilities are attached to executable files, and the rules that determine how a process's capabilities transform when it executes a
file. I'll also consider some of the problems of capabilities that have hindered their adoption as well some remaining problems in their implementation.

avatar for Michael Kerrisk

Michael Kerrisk

Trainer/writer/programmer, man7.org
Michael Kerrisk is a trainer, author, and programmer who has a passion for investigating and explaining software systems. He is the author of "The Linux Programming Interface", a widely acclaimed book on Linux (and UNIX) system programming. He has been actively involved in the Linux... Read More →

Tuesday October 29, 2019 15:15 - 15:50 CET
Salon Pasteur
  Linux Systems
  • Session Slides Included Yes